[INFO] cloning repository https://github.com/emysliwietz/rosarium
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emysliwietz/rosarium" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femysliwietz%2Frosarium", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femysliwietz%2Frosarium'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 487d1f16f8498195f0401abeef01d18f42ace579
[INFO] documenting emysliwietz/rosarium against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femysliwietz%2Frosarium" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/emysliwietz/rosarium on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emysliwietz/rosarium
[INFO] finished tweaking git repo https://github.com/emysliwietz/rosarium
[INFO] tweaked toml for git repo https://github.com/emysliwietz/rosarium written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/emysliwietz/rosarium already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm v0.18.2
[INFO] [stderr]   Downloaded bdays v0.1.2
[INFO] [stderr]   Downloaded tui v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbd8028bd4ccb9691105ccaee7ae885979249f679f960003b950bd7e052095b8
[INFO] running `Command { std: "docker" "start" "-a" "fbd8028bd4ccb9691105ccaee7ae885979249f679f960003b950bd7e052095b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbd8028bd4ccb9691105ccaee7ae885979249f679f960003b950bd7e052095b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbd8028bd4ccb9691105ccaee7ae885979249f679f960003b950bd7e052095b8", kill_on_drop: false }`
[INFO] [stdout] fbd8028bd4ccb9691105ccaee7ae885979249f679f960003b950bd7e052095b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cf82cfb508e3e8c70eb26cf195fd83a282021361fc90c19684e2bae4498a461
[INFO] running `Command { std: "docker" "start" "-a" "6cf82cfb508e3e8c70eb26cf195fd83a282021361fc90c19684e2bae4498a461", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking bdays v0.1.2
[INFO] [stderr]  Documenting rosarium v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_advance_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rosarium`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name rosarium src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3d2f7795db1ba40c -L dependency=/opt/rustwide/target/debug/deps --extern bdays=/opt/rustwide/target/debug/deps/libbdays-0fe8831b4a1df033.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-64a8db82754a7982.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-2b20a67a24948abb.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-6d29937f381f62a6.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a152c7ea388b7bda.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d129937cc33f7f0a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-8e6f675a7d407ac0.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-69fe9722f085ed0d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6cf82cfb508e3e8c70eb26cf195fd83a282021361fc90c19684e2bae4498a461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf82cfb508e3e8c70eb26cf195fd83a282021361fc90c19684e2bae4498a461", kill_on_drop: false }`
[INFO] [stdout] 6cf82cfb508e3e8c70eb26cf195fd83a282021361fc90c19684e2bae4498a461